You are using a Gevey SIM or other SIM interposer to get service. It's tricking the phone it's roaming from the Netherlands. Basically, you phone thinks its on Vodafones network and you can never get the update with that phone.

To get official tmobile carrier update for iphone 5 for unlocked and jailbreak device. If u have ios 6.0.1 -6.1.2 any version jailbreak u get carrier update buy conncting ur device with itune
I m running on ios 6.0.2 i just change my ios version name using a cydia and i connect my phone 2 itune i get tmobile 14.1 carrier update with lte and visual voicemail
To change version name on iphone
Use ifile then goto system then library then core services then system verison.plist and botton of the page u see the version of ur ios just change with 6.1.3 and save and connect to itune u get official tmobile carrier update